Guru's body was buried inside the jail premises, said officials.
In a letter to Jail Director General Vimla Mehra, drafted by Guru's lawyer N.D. Pancholi, wife Tabassum said the last rites of her husband should be performed in a dignified manner.
"We are writing you to please permit the family members to give Afzal Guru a proper dignified last rites in accordance with the religious traditions.
"If you could inform us when the family members can perform their 'Namaaz-e-Janaza', we would appreciate it," said the letter, a copy of which is with IANS.
"We do not wish to make it a political issue in an atmosphere which is already volatile but the family members, as citizens of India, have a right, which must be respected," the letter said.
Guru, convicted for his role in the attack on India's parliament in 2001, was hanged in the jail at 8 a.m. after his mercy plea was rejected by President Pranab Mukherjee Feb 3.
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